Membership 2 Pro does not send invoice details in emails

In Automated Email Responses, for both of my memberships, I have added the text:

"Here's the details of the plan you selected:"

Beneath that text I added the shortcode: %ms-invoice%.

When the emails arrive to a new user, all that is seen is:

"Here's the details of the plan you selected:"

The invoice details are not shown.

What to do?

Support Access is ON.

Thanks,
Don